Home / 785,377.72-1,177,391.90-272,976.28

Finding the Fourth Proportional to 785,377.72, 1,177,391.90 and 272,976.28

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Solution

The fourth proportional to 785,377.72, 1,177,391.90 and 272,976.28 is: 409,229.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    785,377.72 : 1,177,391.90 = 272,976.28 : x
  2. Step 2: Convert to fraction form
    785,377.72/1,177,391.90 = 272,976.28/x
  3. Step 3: Cross multiply
    785,377.72x = 1,177,391.90 × 272,976.28
  4. Step 4: Simplify right side
    785,377.72x = 321,400,060,964.13
  5. Step 5: Solve for x
    x = 321,400,060,964.13/785,377.72
  6. Step 6: Final answer
    x = 409,229.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.